Discussion of Relay Protection Testing Technology for Intelligent Substation

The rapid development of China's power industry closely tracks the development trend of national grid intelligence, in order to ensure intelligent substation, as a basis and an important part of the smart grid, safe and stable operation, it is particularly important for the performance of the intelligent substation relay protection device. This paper briefly describes the test method of the secondary system of intelligent substation, from the aspects of integration test and field debugging, the dynamic physical simulation system and real-time digital simulation system are briefly introduced, and the microcomputer-based relay protection tester and its development history are introduced in detail, finally, the possible development direction of future smart substation relay protection test technology is prospected.